"We wanted an intimate, farm-inspired wedding," Williams, 32, tells PEOPLE of her nuptials, which were held at the home of her sister Kimberly Williams-Paisley and brother-in-law Brad Paisley. "We basically planned an upscale keg party!"

Keeping things low-key, the couple, who met eight years ago in acting class, exchanged vows they wrote themselves and wedding bands they bought from Overstock.com.

Flip-Flop Party Favors

At the reception, which was held in the sand pit where Paisley trains his horses, guests were treated to a pair of party favors – flip-flops, "so they can relax and have fun," Williams says.

About 50 guests, including Paisley and his wife, danced the night away to a four-member local country band, sipping an assortment of Anheuser-Busch beer, wine and their signature wedding drink, "The Smashed," a whiskey-based swill coined in reference to Williams's nickname, "Smash."